- Conditions
- Infertility,Male, Vitamin D Deficiency
- Interventions
- Vitamin D
- Diagnostic Test
- Lead sponsor
- Sanford Health
- Other
- Eligibility
- 21 Years to 56 Years · Male only
- Enrollment
- 230 participants
- Timeline
- 2019 – 2022
- U.S. locations
- 1
- States / cities
- Sioux Falls, South Dakota
Search Results
Search by objective public record fields.
Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.
These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Showing 145–168
of 415
matching trials from the live ClinicalTrials.gov search.
- Conditions
- Rheumatoid Arthritis, Hypovitaminosis D
- Interventions
- Vitamin D, placebo
- Dietary Supplement
- Lead sponsor
- University of Wisconsin, Madison
- Other
- Eligibility
- 18 Years to 90 Years
- Enrollment
- 22 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2005 – 2009
- U.S. locations
- 1
- States / cities
- Madison, Wisconsin
- Conditions
- Vitamin D Insufficiency, Vitamin D Deficiency
- Interventions
- Pharmacist Education about Vitamin D
- Behavioral
- Lead sponsor
- University of Colorado, Denver
- Other
- Eligibility
- 65 Years to 89 Years
- Enrollment
- 80 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2005 – 2006
- U.S. locations
- 1
- States / cities
- Aurora, Colorado
- Conditions
- Obesity, Vitamin D Deficiency, Psychosis, Schizophrenia, Schizoaffective Disorder
- Interventions
- Ergocalciferols
- Drug
- Lead sponsor
- University of Massachusetts, Worcester
- Other
- Eligibility
- 10 Years to 18 Years
- Enrollment
- 12 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2010
- U.S. locations
- 1
- States / cities
- Worcester, Massachusetts
- Conditions
- Ergocalciferol
- Interventions
- Ergocalciferol
- Drug
- Lead sponsor
- Wake Forest University Health Sciences
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 44 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2019 – 2020
- U.S. locations
- 1
- States / cities
- Winston-Salem, North Carolina
- Conditions
- Cystic Fibrosis
- Interventions
- Vitamin D Powder, Vitamin D Oil
- Dietary Supplement
- Lead sponsor
- Emory University
- Other
- Eligibility
- 18 Years to 59 Years
- Enrollment
- 17 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2013 – 2015
- U.S. locations
- 1
- States / cities
- Atlanta, Georgia
- Conditions
- Chronic Kidney Disease Mineral and Bone Disorder
- Interventions
- Phosphorus Absorption Test
- Other
- Lead sponsor
- Purdue University
- Other
- Eligibility
- 30 Years to 75 Years
- Enrollment
- 20 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2018 – 2019
- U.S. locations
- 1
- States / cities
- West Lafayette, Indiana
- Conditions
- Type 2 Diabetes
- Interventions
- Vitamin D, Placebo
- Drug
- Lead sponsor
- University of Florida
- Other
- Eligibility
- 30 Years to 65 Years
- Enrollment
- 76 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2015
- U.S. locations
- 1
- States / cities
- Gainesville, Florida
- Conditions
- Tumor Induced Osteomalcia, Osteomalacia, Familial Tumoral Calcinosis
- Interventions
- Not listed
- Lead sponsor
- National Institute of Dental and Craniofacial Research (NIDCR)
- NIH
- Eligibility
- 1 Day to 100 Years
- Enrollment
- 1,000 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- Started 2001
- U.S. locations
- 1
- States / cities
- Bethesda, Maryland
- Conditions
- Vitamin D Deficiency, Fat Malabsorption
- Interventions
- Calcifediol, Calciferol
- Drug
- Lead sponsor
- Boston University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 16 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2018 – 2019
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Hypovitaminosis D
- Interventions
- Standing Phototherapy Kiosk, D3 Oral supplement
- Device · Dietary Supplement
- Lead sponsor
- Madigan Army Medical Center
- Federal
- Eligibility
- 18 Years to 69 Years
- Enrollment
- 106 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2018 – 2019
- U.S. locations
- 1
- States / cities
- Tacoma, Washington
- Conditions
- Secondary Hyperparathyroidism, Chronic Kidney Disease
- Interventions
- Paricalcitol, Ergocalciferol
- Drug
- Lead sponsor
- Salem Veterans Affairs Medical Center
- Federal
- Eligibility
- 18 Years and older
- Enrollment
- 80 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2011
- U.S. locations
- 1
- States / cities
- Salem, Virginia
- Conditions
- Vitamin D Deficiency, Insulin Resistance, Insulin Sensitivity, Obesity
- Interventions
- Not listed
- Lead sponsor
- University of Alabama at Birmingham
- Other
- Eligibility
- 13 Years to 18 Years · Female only
- Enrollment
- 30 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2010
- U.S. locations
- 1
- States / cities
- Birmingham, Alabama
- Conditions
- Sjogren's Syndrome, Vitamin D Deficiency
- Interventions
- Not listed
- Lead sponsor
- University of Pennsylvania
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 100 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2017
- U.S. locations
- 1
- States / cities
- Philadelphia, Pennsylvania
- Conditions
- X-Linked Hypophosphatemia
- Interventions
- Burosumab
- Biological
- Lead sponsor
- Kyowa Kirin, Inc.
- Industry
- Eligibility
- 1 Year to 4 Years
- Enrollment
- 13 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2016 – 2019
- U.S. locations
- 3
- States / cities
- New Haven, Connecticut • Indianapolis, Indiana • St Louis, Missouri
- Conditions
- Osteomalacia
- Interventions
- Osteomalacia
- Drug
- Lead sponsor
- National Institute of Dental and Craniofacial Research (NIDCR)
- NIH
- Eligibility
- 18 Years to 70 Years
- Enrollment
- 1 participant
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2012 – 2016
- U.S. locations
- 1
- States / cities
- Bethesda, Maryland
- Conditions
- Vitamin D Deficiency
- Interventions
- Vitamin D, 25(OH)D3
- Drug
- Lead sponsor
- University of California, Los Angeles
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 35 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2014 – 2019
- U.S. locations
- 2
- States / cities
- Los Angeles, California
- Conditions
- Vitamin D Deficiency, Osteoporosis
- Interventions
- Vitamin D, placebo
- Drug
- Lead sponsor
- University of Wisconsin, Madison
- Other
- Eligibility
- 55 Years and older
- Enrollment
- 96 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2001 – 2004
- U.S. locations
- 1
- States / cities
- Madison, Wisconsin
- Conditions
- Lead Poisoning, Vitamin D Deficiency
- Interventions
- d-penicillamine, placebo
- Device · Drug
- Lead sponsor
- FDA Office of Orphan Products Development
- Federal
- Eligibility
- 6 Months to 16 Years
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- Started 2007
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Hypovitaminosis D
- Interventions
- 25 Hydroxy- Vitamin D3 [25 (OH) D3], Placebo
- Drug
- Lead sponsor
- Charles Drew University of Medicine and Science
- Other
- Eligibility
- 18 Years to 70 Years
- Enrollment
- 330 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2013 – 2018
- U.S. locations
- 1
- States / cities
- Los Angeles, California
- Conditions
- Vitamin D Deficiency
- Interventions
- Redoxon VI, placebo
- Dietary Supplement
- Lead sponsor
- Oregon State University
- Other
- Eligibility
- 55 Years to 75 Years
- Enrollment
- 42 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2016 – 2019
- U.S. locations
- 1
- States / cities
- Corvallis, Oregon
- Conditions
- Osteoarthritis, Vitamin D Deficiency
- Interventions
- Vitamin D3
- Drug
- Lead sponsor
- University of Miami
- Other
- Eligibility
- 18 Years to 96 Years
- Enrollment
- 200 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2025 – 2027
- U.S. locations
- 1
- States / cities
- Miami, Florida
- Conditions
- Vitamin D Deficiency
- Interventions
- Oral Vitamin D Supplementation
- Drug
- Lead sponsor
- Winthrop University Hospital
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 150 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2004 – 2006
- U.S. locations
- 1
- States / cities
- Mineola, New York
- Conditions
- Crohns Disease, Vitamin D Deficiency
- Interventions
- 5000 IU D3, 1000 IU D3, Placebo
- Dietary Supplement
- Lead sponsor
- Cedars-Sinai Medical Center
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 10 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018
- U.S. locations
- 1
- States / cities
- Los Angeles, California